COMITE PERMANENT INTER-ETATS DE LUTTE CONTRE LA SECHERESSE DANS LE SAHEL
PERMANENT INTERSTATE COMMITTEE FOR DROUGHT CONTROL IN THE SAHEL
Centre Régional AGRHYMET
ATELIER REGIONAL DE FORMATION SUR LE SUIVI DE LA SÉCHERESSE & RÉUNION G-WADI
REGIONAL TRAINING WORKSHOP ON DROUGHT MONITORING & G-WADI MEETING
Niamey (Niger), January 30 – February 3, 2012
From January 30 to February 3, 2012, a capacity building workshop on drought monitoring, and a meeting of the SubSaharan network of UNESCO G-WADI (“Water and Development Information for Arid Lands – a Global Network”),
were held in Niamey, Niger. This meeting was organized by AGRHYMET in collaboration with UNESCO (IHP),
Princeton University (United States), ICPAC (Kenya), numerous basin organizations (NBA, OMVG, OMVS, LCBC),
hydrologists in some countries of the CILSS (Senegal, Niger, Burkina Faso and Mali), and the International Center for
Integrated Water Resources Management (ICIWaRM; USA). The workshop focused on a hydrological drought
monitoring tool developed by Princeton University.
The workshop objectives were to transfer the tool to AGRHYMET, to strengthen the capacities of participants in the
use of the tool while examining ways and means of validation at the regional level, and to organize a meeting to
launch the activities of the G-WADI network in sub-Saharan Africa.
January 30, 2012
The opening ceremony began with words of welcome from an AGRHYMET communications expert, who in turn gave
the floor to:
• Mr. Abou Amani, representative of UNESCO;
• Professor Eric Wood, of Princeton University;
• Mr. William Logan of the technical secretariat of G-WADI, in the United States; and
• Professor Cheikh Bécaye Gaye, of Cheikh Anta Diop University and Coordinator of the G-WADI network in subSaharan Africa.
The Director General of AGRHYMET then closed the ceremony and inaugurated the workshop.
After a break, the workshop program was adopted and a group was set up to facilitate the flow of work. This was
headed by Professor Sheikh Bécaye GAYE with rapporteurs Mr. Ansoumana BODIAN, a hydrologist at the
Department of Management and Planning of Water Resources of Senegal, and Mr. Bashir Alkali Tanimoune, a
hydrologist at the Autorité du Bassin du Niger (Niger Basin Authority).
______________________________________________________________________________________________________________________________________________________________________________
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CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
Initially a series of presentations were made by experts from Princeton University about the logic underpinning the
tool, the data used and some results from matching the model at the United States. For some time, there was a focus
on the results obtained in the Niger basin.
These presentations were followed by discussions for more clarification on some aspects of the operation of the tool.
At the end of the fruitful discussions, the staff of Princeton University launched a call for an expression of the different
participants’ needs for a better operational tool at regional level.
This was followed by presentations from experts on their AGRHYMET activities, which can be summarized as follows:
• Hydrometeorological Monitoring;
• Information processing data collected primarily at the national level;
• Production and dissemination of information; and
• Capacity building.
In their presentations, experts from AGRHYMET placed special emphasis on seasonal hydrologic forecasts. For
example, data, methods, tools and products obtained during the forecast were presented.
ICPAC, through his representative, made a presentation on its experience in climate prediction and information
dissemination in the Horn of Africa.
During the discussions, a number of difficulties were highlighted by experts in AGRHYMET, such as:
• The problem of data collection (collaboration between AGRHYMET and the country);
• The distribution of products developed by AGRHYMET at the country level.
January 31, 2012
This day was devoted initially to the presentation of hydrological monitoring at the national level and by basin
organizations. Thus, the various nations and basin organizations made brief presentations of hydrological monitoring
systems. These presentations revealed the problem of sustainability of hydrological monitoring in the West African
sub-region, which explains the importance of gaps in the databases. Thus, knowledge of water resources and its
seasonal variations at the country level is weak because of truncated or missing hydrological data sets. This lack of
knowledge of water systems is a major handicap for their development.
These presentations were followed by a lengthy discussion on the problem of monitoring streams in the region. Thus,
all participants agreed on the need to explain to our authorities the importance of hydrological data for the
development of our respective countries, given the role that water plays in our development policies. This development
comes along with growing water needs, coupled with strong population growth. Indeed, development policies cannot
be sustained except when based on reliable indicators. A strong appeal was made for the establishment of a network
at the same minimum level of each country and for the need to maintain this network. In addition, participants
requested that the basin organizations be supportive of their respective nations in the monitoring of water resources
given the limited resources of these nations.
The afternoon of this day was devoted to the technical presentation of the Hydrological Drought Monitoring tool by
Princeton University. Thus, the following aspects of the model were presented:
• The input parameters of the model;
• The hydrometeorological data forcing the model;
• The components;
• The spatial resolution;
• The calibration; and
______________________________________________________________________________________________________________________________________________________________________________
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CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
• The objective function to measure its effectiveness.
Then all the methodology used for the correction of satellite data used in the model was presented, along with some
simulation results for the Congo and Niger basins. Finally, Professor Wood and his colleagues returned to the
methodology used to calculate the drought index.
This presentation was followed by a discussion during which the participants expressed the need for operationalizing,
and prospects for improving, the tool considering the fact that it was developed using an international database that
has some uncertainties.
At the end of its discussions, it was decided to continue working with the historical version, but that Princeton
University should think of setting up a version for hydrologic forecasting in relation to the activities of PRESAO.
February 1, 2012
This day was devoted to the manipulation of the tool and a tutorial session allowing participants to become familiar
with the tool and see the differences resulting from the model. Following these exercises, there was a discussion of
methods to validate the tool. Three output variables of the model will be used for validation. These are rainfall, deficits
and the drought index.
At the end of the day, several recommendations were made:
• To the basin organizations and nations to create a statement of their requirements that AGRHYMET will forward to
Princeton University to adapt the model to the sub-regional context of West Africa;
• To identify the gauging stations with a quality time series of data in order to judge the effectiveness of the model;
• In terms of rainfall and the drought index, AGRHYMET was asked to develop a methodology that will enable it to use
the half degree rainfall data of Niamey and crop water satisfaction indices to validate these two variables.
However, the various participants acknowledged the difficulty of validating the precipitation variable of the drought
index because of the scale of the model, which is daily.
______________________________________________________________________________________________________________________________________________________________________________
SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
February 2, 2012
Workshop Recommendations
1. Discussion of future needs and feedback. What improvements need to be made to the system
(upgrades, missing processes, data sources, forecasting)?
o Possible development of new products and training at Princeton for future editions.
o Tasks:
Short-term (3-6 month, by July 2012):
 Wiki page (doc) – PU/Agrhymet
 Communication and updates (via Agrhymet)
 Language option (French, etc.)
 Decide lead for each basin (Niger: Bachir; OMVS: Toure; OMVG: Camara;
LCBC: Sedick; Volta: Bernard)
 Discharge validation (5 basins, 5 gauging points),
o Metrics (seasonal cycle, timing, high/low flows) (PU)
o Add new stations (PU with input from countries/basins)
o Feedback on validation?
 System updates (PU/Agrhymet)
o Averages (spatial and temporal)
o Vector overlays
o Statistics
 Comments/problems page online (PU, testing by all)
Medium term (6 months - 1yr):
 Merging station data (case study in short term?)
 Validation (rainfall, drought index)
 Merging discharge
 Initial seasonal forecasting results
 Lakes (chad, surface area) – need to provide paper
Long-term (1 year or more):
 Flood monitoring/forecasting, seasonal forecasting
______________________________________________________________________________________________________________________________________________________________________________
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CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
 Higher resolution (sub regions, 1-5km)
o Needs :
Assimilate station data
Post-training support, user group, online comments, online help
Language
Infilling of discharge data – provide the method to do this
Discharge statistics (mean, max, min, variability)
Discharge at any point on river (sub-basins)
Meteorology (wind direction, solar radiation, other variables in realtime?)
Basin statistics (infiltration, ET, WT, recharge)
Vector overlays (basin outline, stations, river network?)
Download map data (export to GIS, ARC ascii)
Maps of averages (monthly, decadal, seasonal, annual, etc)
User-defined spatial average (basin, admin)
Runoff for agriculture
Multiple maps (comparisons, differences)
Streamflow (m3/s, percentiles)
Flood forecasting (inundation)
Seasonal forecasting
Water levels
Droughts
Updates
o Ongoing updates and dialogue
o System updates on site or at Princeton?
o How do monitor users wish to communicate with Princeton?
o Approaches for incorporating validation/observations in the system?
o Needs and challenges of adding a forecasting component?
2. Transferability to other regions/centers. Discussion on potential transfer to ICPAC, SADC and other
centers. What is the interest and feasibility in transferring the system to other regions?
o June or Aug 2012: ICPAC
______________________________________________________________________________________________________________________________________________________________________________
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CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
o ICPAC forecasts (how to merge with system?)
ICPAC will provide forecasts to test
And discharge for one basin to test the calibration
o Provision of forecasts to users
o Regional specific improvements
o Maintenance? PU versus regional systems (data issues)
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SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
LIST OF PARTICIPANTS
INSTITUTION
N°
NAME AND TITLE
CONTACTS
ABN
1
Bachir TANIMOUN
Hydrologue
Autorité du Bassin du Niger
BP : 729 Niamey, NIGER
Cel : +227 96 53 54 91
Email : balkaly@abn.ne
Bat_alkalao@yahoo.com
ASECNA
2
Adamou MAHAMADOU
Prévisionniste
Météo/Recherche
BP : 1096 Niamey, NIGER
Cel : +227 94 92 86 62
Email : mahamadou.adamou@gmail.com
CBLT
3
AHMED Sédick
Hydrologue
Commission du Bassin du Lac Tchad
Rond point des Grandes Armées
BP : 727 N’Djaména, TCHAD
Tél : +235 66 40 86 14
Fax : +235 22 52 41 37
Email : ahmed_sedick@yahoo.fr
lcbc@intnet.td
DGPRE
4
BODIAN Ansoumana
Hydrologue
Direction de la Gestion de la Planification
des Ressources en eau
BP : 14484 Dakar Peytavin Ex camp Lat Dior, SENEGAL
Tél : +221 33 822 21 54
Cel : +221 77 811 75 53
Fax : +221 33 822 95 81
Email : dioung2001@yahoo.fr
bodianansoumana@gmail.com
DGRE
5
MINOUNGOU Bernard
Hydrologue
Direction Générale des Ressources en Eau
03 BP 7025 Ouagadougou 03
BURKINA FASO
Email : minoungoubernard@yahoo.fr
DNH
6
Mama YENA
Ingénieur Hydrologue
Direction Nationale de l’Hydraulique
Square Patrice Lumunba
Bamako, MALI
Tél : +223 20 21 25 88 / 20 21 48 77
Fax : +223 20 21 48 78
Email : dnh@afribone.net.ml
mamayena@yahoo.fr
ENI-ABT
7
Adama MARIKO
Enseignant Chercheur
Ecole Nationale d’Ingénieurs Abderhamane
Baba Touré
Unité Eau/Environnement - DER Géologie
BP 242, Bamako, MALI
______________________________________________________________________________________________________________________________________________________________________________
SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
INSTITUTION
N°
NAME AND TITLE
CONTACTS
Tél : +223 20 22 27 36
Fax : +223 20 21 50 38
Cel : +223 66 72 99 23 / 7716 51 29
Email : Adama.Mariko@ird.fr
ICIWARM
8
Dr LOGAN William
Deputy Director
Institute for Water Resources
7701 Telegraph Rd
Alexandria, VA 22315 USA
Phone : +1 703 428 6054
Email : will.logan@usace.army.mil
IGAD
9
Dr. OLANG‘ Luke Omondi
Climate Studies & Water
ICPAC - IGAD
Climate Prediction and Application Centre
P. O. Box 10304 - 00100, Nairobi - KENYA
Tel: +254 717 575 745 (Handy)
Fax: +254 203878343
Email : olanglk@yahoo.com
luke.olang@icpac.net
OMVG
10
Amadou CAMARA
Expert en Environnementaliste
13, Rue Leblanc angle Nelson Mandela
BP : 2353 Dakar SENEGAL
Tél. (Bur) : +221 33 822 31 59
Fax : +221 33 822 59 26
Cel : +221 77 449 64 38
Email : amadoucamar@omvg.sn
amadou602003@yahoo.fr
omvg@omvg.sn
OMVS
11
TOURE Oumar Mohomone
Chef Division Protection de
l’Environnement et
Suivi/Evaluation
BP : 3152 Dakar, SENEGAL
Tél (Bur) : +221 33 859 81 81
Email : omvssphc@omvs.org
omvssphc@yahoo.fr
TANESCO
12
Stanislaus MARCO KIZZY
Tanzania Electric Supply Company Ltd.
(TANESCO)
P. O. Box 9024, Dar es Salaam TANZANIA
Tel: +255 222 451 210 / +255 784 310 340
Fax : +255 22 2451 206
Email : kizsta@yahoo.com
stanislaus.kizzy@tanesco.co.tz
kizzystanislaus@hotmail.com
UNESCO
13
Dr Abou AMANI
Hydrologue Regional
UN Gigiri Complex Bloc C.
Naïrobi, KENYA
Tél : +254 20762 23 51
Fax : +254 20762 1234
Email : a.amani@unesco.org
UNIVERSITY
14
CHANEY W. Nathaniel
Research Hydrologist
Civil and Environmental Engineering
Department
______________________________________________________________________________________________________________________________________________________________________________
SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
INSTITUTION
N°
NAME AND TITLE
CONTACTS
Princeton University
Princeton NJ 08544 - USA
Phone : +001 213 330 0707
Email: nchaney@Princeton.EDU
AGRHYMET
15
Prof. GAYE Cheikh Bécaye
Coordonateur G-WADI,
Afrique Sub-Saharienne
Université Cheikh Anta Diop (UCAD)
Département de Géologie
Faculté des Sciences et Techniques
BP : 5005, Dakar - Fann, SENEGAL
Tel : +221 77 425 7136 / +221 33 860 7392
Email : cheikhbecayegaye@yahoo.fr
cheikhbecayegaye@gmail.com
16
Dr OBIERO Clifford
Lecturer & Research
Hydrologist
Kenyatta University
Department of Water and Environnemental
Engineering
P. O. Box 43844 -00100, Nairobi, KENYA
Phone : +254 722 631 512
Email : cliffordobiero@yahoo.co.uk
17
Dr. SHEFFIELD Justin
Research Scientist
Department of Civil and Environmental
Engineering ; Princeton University
Princeton NJ 08544 - USA
Phone : +1 609 258 15 51
Fax: (609) 258-2799
Email: justin@Princeton.EDU
18
Dr. WOOD Eric
Workshop Instructor
Department of Civil and Environmental
Engineering ;
Princeton University Princeton NJ 08544
USA
Phone : +1 609 258 46 15
Fax : +1 609 258-27 99
Email: efwood@princeton.edu
19
Dr ALI Abdou
Expert hydrologue
Centre Régional AGRHYMET
BP : 11011 Niamey, NIGER
Tél : +227 20 31 53 16/ 20 31 54 36
Fax : +227 20 31 54 35
Email : A.Ali@agrhymet.ne
20
Dr TRAORE Seydou
Expert agrométéorologue
Chef Unité Coordination
Scientifiques
Centre Régional AGRHYMET
BP : 11011 Niamey, NIGER
Tél : +227 20 31 53 16/ 20 31 54 36
Fax : +227 20 31 54 35
Email : S.Traore@agrhymet.ne
21
SOUMANA Djibo
Centre Régional AGRHYMET
BP : 11011 Niamey, NIGER
Tél : +227 20 31 53 16/ 20 31 54 36
Fax : +227 20 31 54 35
Email : S.Djibo@agrhymet.ne
______________________________________________________________________________________________________________________________________________________________________________
SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org
INSTITUTION
BTI
N°
NAME AND TITLE
CONTACTS
22
Lallé Chaï YACOUBA
Comptable
Centre Régional AGRHYMET
BP : 11011 Niamey, NIGER
Tél : +227 20 31 53 16/ 20 31 54 36
Fax : +227 20 31 54 35
Email : L.Yacouba@agrhymet.ne
23
Binta ZALAGOU
Secrétaire de Direction
Centre Régional AGRHYMET
BP : 11011 Niamey, NIGER
Tél : +227 20 31 53 16/ 20 31 54 36
Fax : +227 20 31 54 35
Email : B.Zalagou@agrhymet.ne
24
YOUNOUSSI Amadou
Traducteur Principal
Interprète de Conférence
Bureau de Traduction et d’Interprétation
BP : 12102 Niamey, NIGER
Tél : +227 21 33 06 05
Cel : +227 90 31 70 40 / 97 50 10 82
+227 93 92 33 06 / 94 60 35 07
Email : amyounoussi@yahoo.com
______________________________________________________________________________________________________________________________________________________________________________
SECRETARIAT EXECUTIF : BP 7049 Ouagadougou 03, Burkina Faso -Tél (+226) 50 37 41 25/26 - Fax (+226) 50 37 41 32 - E-mail : cilss.se@cilss.bf - www.cilssnet.org
CENTRE REGIONAL AGRHYMET : BP 11011 Niamey, Niger - Tél (+227) 20 31 53 16 / 20 31 54 36 - Fax (+227) 20 31 54 35 - E-mail : admin@agrhymet.ne - www.agrhymet.ne
INSTITUT DU SAHEL : BP 1530 Bamako, Mali - Tél 223) 20 22 21 48 - 20 23 40 67 - 20 22 30 43 - Fax (223) 20 22 78 31 Mail : administration@insah.org